Patent US4903701A successfully refreshed from Google Patents.
Patent US4257951A successfully refreshed from Google Patents.
US4257951A
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US
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Two-step milling process for preparing pigmentary copper phthalocyanine
Assignee: Artience Co Ltd
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Filing: 1980-03-24
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Granted: 1981-03-24
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Expires: 2000-03-24
Abstract
Abstract Converting crude copper phthalocyanine (CPC) to pigmentary copper phthalocyanine (CPC) by two-stage milling with 5-400% by weight of alum and 0.6-3.7 cc of organic liquid per 100 grams of CPC in the first stage and 1.2-9.8 cc of organic liquid per 100 grams of CPC in the second stage with the total organic liquid being 4-13 cc per 100 grams CPC.
Inventors
- 👤 Howard Matrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:57
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0014; C09B67/0016; C09B67/0022; C09B67/0023
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
142 words
A two-stage milling process for preparing pigmentary copper phthalocyanine comprising milling crude copper phthalocyanine with a 5-400% by weight of Al 2 (SO 4 ) 3 .15-18 H 2 O based on the crude and 0.6-3.7 cc per 100 grams of copper phthalocyanine of an organic liquid in the first stage, milling said crude further with an additional 1.2-9.8 cc per 100 grams of copper phthalocyanine of an organic liquid in a second stage, the total amount of organic liquid charged in both stages is in the range of 4-13 cc inclusive per 100 grams of copper phthalocyanine, treating the milled copper phthalocyanine with an emulsion of a water-insoluble organic liquid in water with or without a surface-active agent at a temperature of 24°-97° C. for 15 minutes to 10 hours, removing the organic liquid and recovering copper phthalocyanine in pigmentary form.
Claim 2
Dependent Claim
142 words
A two-stage milling process for preparing pigmentary copper phthalocyanine comprising milling crude copper phthalocyanine with a 5-400% by weight of Al 2 (SO 4 ) 3 .15-18 H 2 O based on the crude and 0.6-3.7 cc per 100 grams of copper phthalocyanine of an organic liquid in the first stage, milling said crude further with an additional 1.2-9.8 cc per 100 grams of copper phthalocyanine of an organic liquid in a second stage, the total amount of organic liquid charged in both stages is in the range of 4-13 cc inclusive per 100 grams of copper phthalocyanine, treating the milled copper phthalocyanine with an emulsion of a water-insoluble organic liquid in water with or without a surface-active agent at a temperature of 24°-97° C. for 15 minutes to 10 hours, removing the organic liquid and recovering copper phthalocyanine in pigmentary form.
Claim 3
Dependent Claim
29 words
The process of claim 1 wherein the amount of organic liquid in the first milling stage is 1-3 cc and the amount in the second stage is 2-8 cc.
Claim 4
Dependent Claim
15 words
The process of claim 2 wherein the organic liquid in the milling stages is tetrachloroethylene.
Claim 5
Dependent Claim
23 words
The process of claim 1 wherein the amount of Al 2 (SO 4 ) 3 .15-18 H 2 O is 25-200% by weight.
Claim 6
Dependent Claim
29 words
The process of claim 4 wherein the amount of organic liquid in the first milling stage is 1-3 cc and the amount in the second stage is 2-8 cc.
Claim 7
Dependent Claim
23 words
The process of claim 1 wherein the amount of Al 2 (SO 4 ) 3 .15-18 H 2 O is 50-100% by weight.
Claim 8
Dependent Claim
29 words
The process of claim 6 wherein the amount of organic liquid in the first milling stage is 1-3 cc and the amount in the second stage is 2-8 cc.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein the organic liquid is tetrachloroethylene.
Claim 10
Dependent Claim
19 words
The process of claim 8 wherein the Al 2 (SO 4 ) 3 .15-18 H 2 O is 25-200%.
Claim 11
Dependent Claim
21 words
The process of claim 8 wherein the Al 2 (SO 4 ) 3 .15-18 H 2 O is 50-100% by weight.
Claim 12
Dependent Claim
20 words
The process of claim 1 wherein the milled copper phthalocyanine is treated in the emulsion formed without a surface-active agent.
Claim 13
Dependent Claim
29 words
The process of claim 11 wherein the amount of organic liquid in the first milling stage is 1-3 cc and the amount in the second stage is 2-8 cc.
Claim 14
Dependent Claim
23 words
The process of claim 11 wherein the amount of Al 2 (SO 4 ) 3 .15-18 H 2 O is 25-200% by weight.
Claim 15
Dependent Claim
23 words
The process of claim 11 wherein the amount of Al 2 (SO 4 ) 3 .15-18 H 2 O is 50-100% by weight.
Claim 16
Dependent Claim
11 words
The process of claim 11 wherein the organic liquid is tetrachloroethylene.
References Cited (Backward Citations)
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Cited
US2556730A
Cited
US3017414A
Cited
US3030370A
Cited
US3598625A
Cited
US4088506A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |